The Breaking Point

The Breaking Point was a pocket dimension created by SlaveDriver, which he used to test Kalask's enemies to see if they truly had hearts heroic enough to face the final challenge. Once in the Breaking Point, SlaveDriver has a godlike control of the location, making it into an arena for battle and even, at one point, a volcano.

SlaveDriver abducted the Rangers and put them to the test against Commandroids and a volcano without their powers before making Jeremy and Walter fight to the death. When they outmaneuvered him and annhiliated the villain, the Breaking Point collapsed in on itself, ceasing to exist even as the Rangers escaped it at the last second.